Dogma is probably one of my favorite Kevin Smith movies. i think everyone should watch it at least once. And then the JW's should definitely hear these quotes:
Serendipity: When are you people going to learn? It's not about who's right or wrong. No denomination's nailed it yet, and they never will because they're all too self-righteous to realize that it doesn't matter what you have faith in, just that you have faith. Your hearts are in the right place, but your brains need to wake up.
Loki: Church laws are fallible because they're created by man.
This one is good too:Bethany: What's he like?
Metatron: God? Lonely. But funny. He's got a great sense of humor. Take sex for example. There's nothing funnier than the ridiculous faces you people make mid-coitus.
Bethany: Sex is a joke in heaven?
Metatron: The way I understand it, it's mostly a joke down here, too.